EP0819967A1 - Konturlesevorrichtung für Brillenrahmen, entsprechender Sensor, und Anwendung dieser Vorrichtung an der Randbearbeitung von einzusetzenden Linsen - Google Patents

Konturlesevorrichtung für Brillenrahmen, entsprechender Sensor, und Anwendung dieser Vorrichtung an der Randbearbeitung von einzusetzenden Linsen Download PDF

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Publication number
EP0819967A1
EP0819967A1 EP97401575A EP97401575A EP0819967A1 EP 0819967 A1 EP0819967 A1 EP 0819967A1 EP 97401575 A EP97401575 A EP 97401575A EP 97401575 A EP97401575 A EP 97401575A EP 0819967 A1 EP0819967 A1 EP 0819967A1
Authority
EP
European Patent Office
Prior art keywords
bezel
probe
head
section
heads
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97401575A
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English (en)
French (fr)
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EP0819967B1 (de
Inventor
Philippe Clara
Pascal Daboudet
Ahmed Haddadi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Publication of EP0819967A1 publication Critical patent/EP0819967A1/de
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Publication of EP0819967B1 publication Critical patent/EP0819967B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
    • B24B9/144—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms the spectacles being used as a template

Definitions

  • This contour reading is commonly done on a device equipped with an appropriate sensor or probe.
  • this location involves, on the one hand, polar coordinates, in a plane perpendicular to the probe rod, and, on the other hand, an altitude, perpendicular to this plane, to take account of the meniscus of the circles or entourages of the most common spectacle frames.
  • the contour reading carried out essentially relates to the circumferential contour of the circle or surrounding of spectacle frame scrutinized.
  • This cross section can be compared to that of a dihedral; it can also be any, other than that of a dihedral, for example half-round; moreover, in practice, from one spectacle frame to another, there is a significant diversity between the cross sections of the bezels according to the manufacturers.
  • the present invention firstly relates to a method for the effective reading of this cross section; it also relates to a probe specific to the implementation of this process.
  • the cross-section of the bezel is a dihedral
  • the probe head aim two points of one of the flanks to deduce therefrom, from the coordinates of these two points, the slope of this flank.
  • the measurement carried out according to the invention very simply makes it possible to determine the section of the bezel of this circle or of the frame of a spectacle frame, at at least one point thereof.
  • the reconstitution of the casing of the glass is obtained by bringing, graphically and / or numerically, the section of the bezel and that of the grinding stone intended to overflow the glass, these two sections being of course on the same scale; the section of the grinding wheel is obtained by conventional means, such as profile projector, dimensional machine or the like.
  • the close position where the section of the grinding wheel touches the section of the bezel corresponds to the simulated positioning of the lens in the frame, which makes it possible to know the position of the top of the bevel relative to the bezel; consequently, the instructions to be given to the grinding wheel for overflowing the glass are obtained by correcting the reading relating to the circumferential contour of the bezel taking account of this relative position of the apex of the bevel.
  • a contact probe is used so that the probe head is "carried" on said points; it goes without saying that these points can be determined using a contactless probe, for example with an optical head.
  • the bezel 10 As is known, the bezel 10, the cross section of which it is to raise, forms a groove along the internal periphery of the circle or surround 11.
  • the probe 12 for its part, comprises a rod 14, which extends substantially perpendicular to the plane of the circle or surrounding 11, and, in cantilever on this rod 14, in practice at the upper end thereof, a head 15 by which it is adapted to engage in the bezel 10, for contact therewith.
  • this head 15 is intangible, insofar as, permanently connected to the rod 14, it has a well-defined geometry and, therefore, a size that is also well-determined.
  • it is a flat palette, which, perpendicular to the rod 14, is cut in the style of a style.
  • the position of the probe 12 can at any time be identified in a given coordinate system.
  • the probe 12 is, on the one hand, movable in a plane P, with respect to which the plane along which extends the spectacle frame to which the circle belongs or surround 11 is substantially parallel, and, on the other hand, movable perpendicular to this plane P, along the axis of its rod 14, as shown schematically by a double arrow F1 in FIG. 1.
  • the position of the probe 12 is, for example, identified in polar coordinates RT, and this is the case in the contour reading device which is the subject of French patent No 89 13 079.
  • the probe 12 can also be mounted to rotate around the axis of its rod 14, for controlling the orientation of its head 15.
  • the probe 12 is generally brought to the bottom of the bezel 10, by successively bringing the head 15 of this probe 12 to two points P1, P2, P'1, P'2 of at least one of the sides 13, 13 'of this bezel 10 different from each other, and the coordinates of these points P1, P2, P'1, P' are deduced 2 the slope of this flank 13, 13 '.
  • the feeler 12 which is available has, for contact with the bezel 10, an intangible head 15, one intervenes in isolation on one of the sides 13, 13 ′ of the bezel 10, without interference with the other of these sides.
  • the probe 12 is first brought into contact with the flank 13 by its head 15 at a point P1 of this flank 13 relatively close to the bottom of the bezel 10, FIG. 2A, then, the probe 12 thus being in contact by this head 15 with this flank 13, it is made to slide in contact with this flank 13 to a point P2 thereof relatively close to the outlet of the bezel 10, such that shown diagrammatically by arrow F3 in FIG. 2B.
  • the probe 12 is first of all carried by its head 15 on the flank 13 'at a point P'1 thereof relatively close to the outlet of the bezel 10, FIG. 3A, then , the probe 12 thus being in contact by this head 15 with this flank 13 ', it is made to slide along this flank 13' to a point P'2 thereof relatively close to the bottom of the bezel 10, as as shown schematically by the arrow F'3 in FIG. 3B.
  • FIGS. 4 to 6 it is proposed, as a variant, according to the invention, to use a feeler 12 having, for contact with the bezel 10, an interchangeable head 15A, 15B.
  • the probe 12 can thus comprise, associated with the same rod 14, at least two heads 15A, 15B of different calibers.
  • these two heads 15A, 15B are each respectively arranged permanently at the two ends of a crosspiece 16, which, carried by the rod 14, for example at its upper end, as shown, extends on either side of this rod 14, substantially perpendicular to the latter.
  • the two heads 15A, 15B are spherical heads, with radii RA, RB different.
  • a first head 15A which makes it possible to note the coordinates of a point P1 on the side 13 of this bezel 10 and the coordinates of a point P'2 on the side 13 'thereof, and, after reversing the probe 12, the procedure is then the same with a second head 15B, of caliber different from that of the first, which makes it possible to note the coordinates of a point P2 on the side 13 of the bezel 10 and the coordinates of a point P'1 on the side 13 'of the latter.
  • each of the heads 15A, 15B is carried by an individual endpiece 18A, 18B by which it is adapted to be attached removably to the rod 14.
  • the tip 18A, 18B is of the same type for the two heads 15A, 15B, and it is a tip 18A, 18B suitable for cooperating in fitting with a tip 19 provided so complementary to this effect on the rod 14.
  • the end piece 18A, 18B of the rods 15A, 15B is a male end piece, while the end piece 19 of the rod 14 is a female end piece, but, of course, a reverse arrangement can be adopted.
  • the bezel 10, of the circle or surrounding 11, is shown, the cross section of which, here the flanks 13, 13 ′ in the form of a dihedron, was determined by the above method using the probe 12 ; this is at the bottom of the bezel, its head 15 touching the sides 13, 13 'in Po, P'o, respectively, and is at a distance from the bottom 21 proper, junction line of the sides 13, 13' of the bezel 10 ; it is in this position that the probe 12 is moved parallel to the plane P in order to raise the circumferential contour of the circle or frame surround, in fact a homothetic image Co of the bottom 21 of the bezel 10, partially visible in plan in FIG. 8 which is a top view with respect to FIG. 7, said image Co being produced from the readings of the probe, here the coordinates of the points of contact of the probe 12 with the sides 13, 13 ′ of the bezel 10.
  • FIG. 7 also shows the section 30 of the grinding wheel intended to overflow the glass to be associated with the bezel 10, this section 30 being on the same scale as that of the bezel 10, these two sections having been brought together one of the other until contact so that the mounting of the glass in the bezel 10 is thus simulated, the section of the grinding wheel having of course a shape strictly complementary to that of the bevel of the glass.
  • FIG. 9 shows an application similar to that which has just been described, but in the case where the probe is of the spherical head type, such as for example the probe 15A of FIGS. 4 to 6.
  • the data of the probe lead to the curve 110 ′, place of the points C100 corresponding to each position of the center of the sphere 15A when the probe scans the bezel whose sides are therefore found to be the envelope of the circular sections of said sphere.
  • the approximation of the section 110 of the bezel and that of the grinding wheel 130 gives the difference 140 between the image Co, here the point of the probe closest to the bottom 121 of the bezel, and the top 131 of the bevel of the glass. cut.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
EP97401575A 1996-07-18 1997-07-03 Konturlesevorrichtung für Brillenrahmen, entsprechender Sensor, und Anwendung dieser Vorrichtung an der Randbearbeitung von einzusetzenden Linsen Expired - Lifetime EP0819967B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9609016 1996-07-18
FR9609016A FR2751433B1 (fr) 1996-07-18 1996-07-18 Procede pour le releve de la section du drageoir d'une monture de lunettes, palpeur correspondant, et application de ce procede au debordage du verre a monter

Publications (2)

Publication Number Publication Date
EP0819967A1 true EP0819967A1 (de) 1998-01-21
EP0819967B1 EP0819967B1 (de) 2003-04-09

Family

ID=9494194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97401575A Expired - Lifetime EP0819967B1 (de) 1996-07-18 1997-07-03 Konturlesevorrichtung für Brillenrahmen, entsprechender Sensor, und Anwendung dieser Vorrichtung an der Randbearbeitung von einzusetzenden Linsen

Country Status (6)

Country Link
US (1) US5881467A (de)
EP (1) EP0819967B1 (de)
JP (1) JPH10113853A (de)
DE (1) DE69720611T2 (de)
ES (1) ES2196274T3 (de)
FR (1) FR2751433B1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777817A1 (fr) * 1998-04-27 1999-10-29 Briot Int Procede et appareil de palpage de montures de lunettes, et machine de meulage correspondante
DE19919311C1 (de) * 1999-04-28 2001-02-15 Wernicke & Co Gmbh Verfahren und Vorrichtung zum berührungslosen Abtasten der Brillenglasöffnung einer Brillenfassung oder des Umfangs eines Brillenglases oder einer Formscheibe
EP1353215A2 (de) * 2002-04-08 2003-10-15 Hoya Corporation Messaparat zur Bestimmung der Form einer Brillenfassung
FR2893723A1 (fr) * 2005-11-23 2007-05-25 Essilor Int Appareil de lecture de contour de drageoir de cercle de monture de lunettes
FR2893523A1 (fr) * 2005-11-21 2007-05-25 Essilor Int Methode d'etalonnage d'une meuleuse et dispositif correspondant
WO2007128902A1 (fr) * 2006-05-05 2007-11-15 Essilor International (Compagnie Générale d'Optique) Procédé d'acquisition de la forme d'une partie au moins d'une section d'un cercle de monture de lunettes
FR2907041A1 (fr) * 2006-10-13 2008-04-18 Essilor Int Procede de detourage d'une lentille ophtalmique
FR2910136A1 (fr) * 2006-12-18 2008-06-20 Essilor Int Procede de correction de la geometrie d'une couche palpee approchant un brin longitudinal d'un drageoir de monture de lunettes et procede d'acquisition de la geometrie d'un contour d'un tel drageoir
WO2008142291A3 (fr) * 2007-04-24 2009-02-05 Essilor Int Procédé de préparation d'une lentille ophtalmique à l'affleurement d'un entourage d'une monture de lunettes
WO2016012720A1 (fr) 2014-07-25 2016-01-28 Essilor International (Compagnie Generale D'optique) Machine d'acquisition d'images de lentilles optiques et procede de detourage de lentilles optiques

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3734386B2 (ja) * 1999-08-03 2006-01-11 株式会社ニデック 玉型形状測定装置
JP4360764B2 (ja) 2000-04-28 2009-11-11 株式会社トプコン 眼鏡レンズのレンズ周縁加工方法、レンズ周縁加工装置及び眼鏡レンズ
FR2870933B1 (fr) * 2004-05-28 2008-03-14 Essilor Int Appareil de lecture de contour comportant un capteur d'effort
FR2892332B1 (fr) * 2005-10-20 2008-02-01 Briot Internat Sa Appareil de palpage d'une monture de lunettes et machine de meulage associee
EP2031435B1 (de) * 2007-12-28 2019-02-27 Essilor International Verfahren zur bestimmung eines konturendatensatzes einer brillenfassung
DE602007010282D1 (de) * 2007-12-28 2010-12-16 Essilor Int Verfahren zur Bestimmung der Parameter für die Trägerherstellung einer Kontaktlinse
CN108340237A (zh) * 2018-03-27 2018-07-31 京东方科技集团股份有限公司 研磨装置及研磨方法
EP4166275A1 (de) 2021-10-18 2023-04-19 Essilor International Verfahren zur bestimmung der form einer brillengestelllünette

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190450A1 (de) * 1984-12-25 1986-08-13 Kabushiki Kaisha TOPCON Vorrichtung zum Messen des Profils von Brillenfassungen
FR2634880A1 (fr) * 1988-07-27 1990-02-02 Briot Int Appareil pour mesurer les cotes interieures d'une monture de lunettes
EP0424207A1 (de) * 1989-10-06 1991-04-24 ESSILOR INTERNATIONAL Compagnie Générale d'Optique Vorrichtung zum Lesen der Konturen, insbesondere der Rahmen von Brillen
EP0502785A1 (de) * 1991-03-07 1992-09-09 ESSILOR INTERNATIONAL Compagnie Générale d'Optique Verfahren zum Abtasten der Form eines beliebigen, elastisch verformbaren Artikels, insbesondere zum Abtasten einer Brillengestellsöffnung
FR2679997A1 (fr) * 1991-07-29 1993-02-05 Buchmann Optical Eng Appareil pour relever automatiquement la forme et/ou le profil du contour interne d'un cercle de monture de lunettes.
EP0583915A2 (de) * 1992-08-05 1994-02-23 Hoya Corporation Bearbeitung von Brillengestell
EP0606171A1 (de) * 1993-01-08 1994-07-13 Hoya Corporation Vorrichtung zum Messen der Konfiguration eines Brillengestells

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196407A (ja) * 1982-05-12 1983-11-15 Sadao Takubo 眼鏡フレ−ム枠ｖ状溝内周長測定装置
US5189806A (en) * 1988-12-19 1993-03-02 Renishaw Plc Method of and apparatus for scanning the surface of a workpiece
FR2662793B1 (fr) * 1990-05-30 1994-03-18 Renault Installation de mesure en continu des defauts de forme d'une piece, et procede de mesure mis en óoeuvre dans cette installation.
US5121550A (en) * 1990-12-03 1992-06-16 Gerber Optial, Inc. Automatic surface tracer
DK16791D0 (da) * 1991-01-30 1991-01-30 Leif Groenskov Fremgangsmaade og middel til maaling af et profil

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190450A1 (de) * 1984-12-25 1986-08-13 Kabushiki Kaisha TOPCON Vorrichtung zum Messen des Profils von Brillenfassungen
FR2634880A1 (fr) * 1988-07-27 1990-02-02 Briot Int Appareil pour mesurer les cotes interieures d'une monture de lunettes
EP0424207A1 (de) * 1989-10-06 1991-04-24 ESSILOR INTERNATIONAL Compagnie Générale d'Optique Vorrichtung zum Lesen der Konturen, insbesondere der Rahmen von Brillen
EP0502785A1 (de) * 1991-03-07 1992-09-09 ESSILOR INTERNATIONAL Compagnie Générale d'Optique Verfahren zum Abtasten der Form eines beliebigen, elastisch verformbaren Artikels, insbesondere zum Abtasten einer Brillengestellsöffnung
FR2679997A1 (fr) * 1991-07-29 1993-02-05 Buchmann Optical Eng Appareil pour relever automatiquement la forme et/ou le profil du contour interne d'un cercle de monture de lunettes.
EP0583915A2 (de) * 1992-08-05 1994-02-23 Hoya Corporation Bearbeitung von Brillengestell
EP0606171A1 (de) * 1993-01-08 1994-07-13 Hoya Corporation Vorrichtung zum Messen der Konfiguration eines Brillengestells

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999055490A1 (fr) * 1998-04-27 1999-11-04 Briot International Procede et appareil de palpage de montures de lunettes, et machine de meulage correspondante
FR2777817A1 (fr) * 1998-04-27 1999-10-29 Briot Int Procede et appareil de palpage de montures de lunettes, et machine de meulage correspondante
DE19919311C1 (de) * 1999-04-28 2001-02-15 Wernicke & Co Gmbh Verfahren und Vorrichtung zum berührungslosen Abtasten der Brillenglasöffnung einer Brillenfassung oder des Umfangs eines Brillenglases oder einer Formscheibe
EP1353215A2 (de) * 2002-04-08 2003-10-15 Hoya Corporation Messaparat zur Bestimmung der Form einer Brillenfassung
EP1353215A3 (de) * 2002-04-08 2004-02-04 Hoya Corporation Messaparat zur Bestimmung der Form einer Brillenfassung
US6845678B2 (en) 2002-04-08 2005-01-25 Hoya Corporation Spectacle frame shape measuring apparatus
WO2007060304A3 (fr) * 2005-11-21 2007-08-16 Essilor Int Methode d'etalonnage d'une meuleuse et dispositif correspondant
FR2893523A1 (fr) * 2005-11-21 2007-05-25 Essilor Int Methode d'etalonnage d'une meuleuse et dispositif correspondant
WO2007060304A2 (fr) * 2005-11-21 2007-05-31 Essilor International (Compagnie Generale D'optique) Methode d'etalonnage d'une meuleuse et dispositif correspondant
US7661197B2 (en) 2005-11-23 2010-02-16 Essilor International (Compagnie Generale D'optique) Method of reading the outline of the bezel of a rim of an eyeglass frame
FR2893723A1 (fr) * 2005-11-23 2007-05-25 Essilor Int Appareil de lecture de contour de drageoir de cercle de monture de lunettes
WO2007060315A1 (fr) * 2005-11-23 2007-05-31 Essilor International (Compagnie Generale D'optique) Procede de lecture de contour de drageoir de cercle de monture de lunettes
WO2007128902A1 (fr) * 2006-05-05 2007-11-15 Essilor International (Compagnie Générale d'Optique) Procédé d'acquisition de la forme d'une partie au moins d'une section d'un cercle de monture de lunettes
US8215772B2 (en) 2006-05-05 2012-07-10 Essilor International Method of acquiring of at least a portion of the shape of a section of a spectacle frame circle
US8132909B2 (en) 2006-05-05 2012-03-13 Essilor International (Compagnie Generale D'optique) Method of preparing an ophthalmic lens to be flush with a surround of an eyeglass frame
WO2008046975A1 (fr) * 2006-10-13 2008-04-24 Essilor International (Compagnie Générale d'Optique) Procédé de détourage d'une lentille ophtalmique
US8133095B2 (en) 2006-10-13 2012-03-13 Essilor International (Compagnie Generale D'optique) Method of shaping an ophthalmic lens
FR2907041A1 (fr) * 2006-10-13 2008-04-18 Essilor Int Procede de detourage d'une lentille ophtalmique
WO2008090284A3 (fr) * 2006-12-18 2008-09-18 Essilor Int Procede de correction de la geometrie d'une courbe palpee
WO2008090284A2 (fr) 2006-12-18 2008-07-31 Essilor International (Compagnie Generale D'optique) Procede de correction de la geometrie d'une courbe palpee
FR2910136A1 (fr) * 2006-12-18 2008-06-20 Essilor Int Procede de correction de la geometrie d'une couche palpee approchant un brin longitudinal d'un drageoir de monture de lunettes et procede d'acquisition de la geometrie d'un contour d'un tel drageoir
US8205345B2 (en) 2006-12-18 2012-06-26 Essilor International (Compagnie Generale D'optique) Method of correcting the shape of a sensed curve approximating a longitudinal trace of a bezel of an eyeglass frame, and a method of acquiring the shape of an outline of such a bezel
WO2008142291A3 (fr) * 2007-04-24 2009-02-05 Essilor Int Procédé de préparation d'une lentille ophtalmique à l'affleurement d'un entourage d'une monture de lunettes
WO2016012720A1 (fr) 2014-07-25 2016-01-28 Essilor International (Compagnie Generale D'optique) Machine d'acquisition d'images de lentilles optiques et procede de detourage de lentilles optiques
US10960511B2 (en) 2014-07-25 2021-03-30 Essilor International Method of trimming optical lenses

Also Published As

Publication number Publication date
US5881467A (en) 1999-03-16
DE69720611D1 (de) 2003-05-15
FR2751433B1 (fr) 1998-10-09
ES2196274T3 (es) 2003-12-16
DE69720611T2 (de) 2004-01-29
FR2751433A1 (fr) 1998-01-23
EP0819967B1 (de) 2003-04-09
JPH10113853A (ja) 1998-05-06

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